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Lecture9-Feb+4th-Descriptive+stats

Lecture9-Feb+4th-Descriptive+stats - class .40pm Nextweek...

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Quiz 6 dueToday before class Exercise 3 will be posted sometime after class. Due date isThursday the 11 th by 1.40pm Next week: Tuesday:Tutorial/quiz 7 Thursday:Tutorial/quiz 8
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Developing questions Avoid Memory overloaded questions Jargon/technical terms Double‐barreled questions Emotionally loaded questions Leading questions Barnum statements
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Developing questions Control for Response Bias (Reverse Code)!!!
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Choosing answer’s options Closed number of alternatives Likert scale Yes/No Frequency 1 2 3 4 5 Strongly Disagree Disagree No Opinion Agree Strongly Agree
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Choosing answer’s options Open‐ended : respondents are free to give answers in their own way More variability in answers Less structure A Priori versus Post Hoc Knowledge What are your thoughts about the man in black? Please rate the following statements on a scale from 1 (strongly disagree) to 7 (strongly disagree) Richard is a good advisor Richard knows a lot of about the island Richard knows what lies in the shadow of the statue
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Selecting how to administer the survey Questionnaires : PP read and answer Interviews : responses provided verbally
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Questionnaire Self‐administered Inexpensive and easy Anonymity Low response rate Nonresponse bias Unrepresentative sample No one to clarify
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Questionnaire Investigator‐administered Can clarify questions Perceived as less anonymous = more socially desirable responses
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Interview Can be face‐to‐face, by phone, or focus‐ group Allows for clarification and more in‐depth investigation However, It is time consuming and expensive Interviewer bias
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Interview Structured Semi‐structured Unstructured
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Self‐report measure are subject to bias!!!
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